Effects of Method and Time of Castration of Feeder Calves

Zweiacher, E. R.; Durham, Ralph M.; Boren, Brandon; Gaskins, C. T.

doi:10.2527/jas1979.4915

Cited by 12 publications

(5 citation statements)

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“…Castration upon arrival is considered a risk factor for BRDC. Delayed castration has repeatedly been found to reduce ADG (Zweiacher et al, 1979;Berry et al, 2001;Fisher et al, 2001), a result that was not influenced by analgesia during castration (Faulkner et al, 1992). Previous facts indicate that castration is stressful.…”

Section: Surgical Procedures (Castration Dehorning)mentioning

confidence: 95%

Etiopathogenesis and economic significance of bovine respiratory disease complex (BRDC)

Kurčubić¹,

Đoković²,

Ilić³

et al. 2018

Acta agriculturae Serbica

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BRDC is the most expensive disease of fattening cattle throughout the world. The reasons for this are high morbidity and mortality, weight loss, reduced food utilization, reduced quality of carcasses and extensive measures of prophylaxis and therapy. BRDC is caused by a substantial number of pathogens (viruses and bacteria), with predisposing risk factors from the ambient and host. Calves are at the highest risk of developing BRDC shortly after shipping. Lighter-weight calves appear to be at greater risk, although this has not been consistent. The complexity of BRDC makes it difficult to define the role of individual factors that predispose to or cause the disease. Stress factors may be "necessary, but not sufficient", but they require additional effects to cause the disease. Increasing the production of meat and milk worldwide would be sustainable by improving the prevention and control of BRDC.

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Section: Surgical Procedures (Castration Dehorning)mentioning

confidence: 95%

Etiopathogenesis and economic significance of bovine respiratory disease complex (BRDC)

Kurčubić¹,

Đoković²,

Ilić³

et al. 2018

Acta agriculturae Serbica

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“…In order to obtain meat of a better quality, particularly from animals slaughtered at older ages, the use of castration is an important tool in beef cattle management. Surgical castration is not only painful to the animals but also decreases weight gain and, in extreme situations, can result in losses through death from infection (Zweiacher et al, 1979). In spite of the possible problems related to lean quality of intact bulls, late castration has been recommended as a means to take advantage of greater weight gain and feed efficiency in bulls (Knight et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

Proximate chemical composition and fatty acid profiles of <i>Longissimus Proximate chemical composition and fatty acid profiles of Longissimus thoracis </i>from pasture fed LHRH immunocastrated, castrated and intact<i> Bos indicus </i>bulls

Ruiz¹,

Matsushita²,

Visentainer³

et al. 2007

SA J. An. Sci.

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This study was carried out to evaluate the effect of a luteinizing hormone-releasing hormone (LHRH) fusion protein vaccine vs. surgical castration on the chemical composition and fatty acid profile of beef cattle (Bos indicus) slaughtered at three years of age. Thirty bulls (Nellore-cross) were divided into three groups: immunized against LHRH fusion protein, castrated or left intact (control). These animals were 24 months old at the initiation of the study and ranged on Brachiaria grass in Mato Grosso, Brazil. Meat of intact bulls presented a lower fat content compared to castrated or surgically castrated animals. For the immunized and surgically castrated animals there were differences in fat and cholesterol concentrations. Although the fatty acid profiles of the three treatments were similar in composition, there were differences in the concentrations of some fatty acids (miristic, C14:0; stearic, C18:0; linolenic, C18:3n-3; and eicosapentaenoic, C22:5n-3). Meat samples of surgically castrated animals had less polyunsaturated (PUFA) and monounsaturated (MUFA) fatty acids (8.2 and 37.7%, respectively), higher saturated (SFA) fatty acids (52.2%) and a lower PUFA/SFA ratio (0.16) and were different compared to intact and immunized bulls. The PUFA/SFA ratio increased as the fat content decreased. On the other hand, surgically castrated bulls had a higher lipid and lower cholesterol contents. It is concluded that immunization against LHRH using new recombinant LHRH fusion proteins could be an alternative to physical castration to improve carcass quality in cattle production.

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“…Processing procedures such as castration and dehorning performed within the first month after arrival at the feedlot have been associated with increased cost of treatment for BRD and higher mortality rates. 31 Other studies 12,[32][33][34] have also shown negative effects of castration and dehorning on the health and future growth performance of calves when performed at the feedlot. In the present study, castration and dehorning were not evaluated in groups followed up during 1999.…”

Section: Discussionmentioning

confidence: 99%

Health performance of feeder calves sold at conventional auctions versus special auctions of vaccinated or conditioned calves in Ontario

Macartney

Bateman²,

Ribble³

2003

javma

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Effects of Method and Time of Castration of Feeder Calves

Cited by 12 publications

References 0 publications

Etiopathogenesis and economic significance of bovine respiratory disease complex (BRDC)

Etiopathogenesis and economic significance of bovine respiratory disease complex (BRDC)

Proximate chemical composition and fatty acid profiles of <i>Longissimus Proximate chemical composition and fatty acid profiles of Longissimus thoracis </i>from pasture fed LHRH immunocastrated, castrated and intact<i> Bos indicus </i>bulls

Health performance of feeder calves sold at conventional auctions versus special auctions of vaccinated or conditioned calves in Ontario

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